Ship



25, 1939. A, sc 2,167,315

SHIP

Filed Dec. 15, 1936 2 Sheets-Sheet 1 q 5 g 9. q i? I a a 3 1 1 F GI /7 7? Sakai" p July25, 1939. v RS HAT 2,167,315

SHIP

Filed Dec. 15, 1936 2 Sheets-Sheet 2 Patented July 25, 1939 PATENT OFFICE SHIP Ane Pieter Schat, Utrecht, Netherlands Application December 15, -1936, Serial No. 116,018

. In the Netherlands December 16, 1935 4 claims. (01. 114-65) This invention relates to the construction of a boat deck, of passenger ships.

' Ordinarily, the life boats on board a ship are placed on or some distance above a horizontal deck. This causes difliculties as regards the embarkation, since it requires the boats first to be .swung out, whereupon they are only accessible for passengers through narrow doors in the ships side, which doors in emergency cases give rise 10 to crowding. Moreover, the passengers are obliged to get into and change their places in a boat, which is freely suspended from its tackles and thereby adapted to swing, which often causes confusion and undue loss of time. Besides, boats lo placed on or above such adec'k deprive saloons and deck cabins of much light and do not allow passengers on said deck to enjoy a free View of the sea.

The object of this invention is to meet these 620 drawbacks. With this object in view, it is suggested to compose the boat deck, in a direction from inboard to outboard, of a horizontal section and of a downwardly and outwardly sloping sec- ..tion, said sections being either or not intercon- 545 nected by a short vertical section. Thus, as compared with conventional constructions, the boat deckv has a recess, the bottom of which slopes downwardly towards the water.

Preferably, the boats are so disposed on the sloping boat deck section as to partly project outward when properly stowed. Also the davits and the outboard part of the boat winch frame .may bemounted on said sloping section.

In conjunction with the boat deck construction 355' as hereinbefore described, I prefer to employa Y double boat winch, that is to say two winches mounted in a common frame, the drums of each of said two winches being arranged the one vertically above the other in such a manner that the lower drum may serve as a guide roller for the fall of the upper drum.

With the boats disposed as described, the passengers can get into them through the full lengths of the boats while these are still in their stowed 5 positions. Embarkation can thus take place in quiet and without danger, and the boats can thereupon be launched very quickly, to which end they can simply be allowed to slide down the sloping boat deck section.

It will further be understood that boats placed on the sloping deck section and projecting outboard through about half their Width, so that their keels are located substantially vertically above the ships side, do not deprive deck cabins 5 and saloons from light and do not impair the free view of the sea, even when the passengers are'lying in deck-chairs. The entire boat deck thus becomes a spacious weather deck.

The promenade deck immediately below the boats will, as a matter of course, have the normal :5 height at the ships side. Further inboard this height increases owing to the fact the boat deck first slopes up and thereupon rises vertically. The extra promenade deck height thus obtained below the horizontal section of the boat deck can ad-lO vantageously be utilized for accommodating main air ductsfor a central ventilation system, which ducts extend longitudinally of the ship so far as to enable branches to be made to a great number of spaces each bound by fire-proof or Water-2115 tight bulkheads extending athwartships and, if desired, also in longitudinal direction. The object thereof is to provide for the supply of either or not heated or cooled air and for the discharge of foul air in essentially the same manner as is usual in 120 the distribution of steam, water and electricity froma central source. Up till now this has been practically impossible, because ventilation ducts require so much space that in ships constructed in the conventional manner they cannot be ac-; .25 commodated. Obviously, such a central ventilation system enables the number of fans to be very materially reduced.

For the handling of life-boats, it is ordinary practice to use double winches, that is to say, too mount the two winches required for two boats in a common frame. Up till now, the drums of each of these two winches have been placed side by side, and the two winches have been mounted side by side on a platform on the inboard side of I the boats, thus occupying a considerable deck space. Moreover, with this arrangement, the

man-at-the-winch has no free view of the descending boat. In order to meet said incon- .veniences, it is suggested to mount the drums of each of the two winches the one vertically above the other, so that the lower drum may act as a guide roller for the fall wound on the upper drum. A double winch constructed along this principle can be placed close to the stern post and the stem, respectively, of two aligned boats spaced apart through the normal distance, in such a manner that it does not project athwartships from the horizontal projection of the boats, whereby much deck space is saved and the man-at-the-winch '50 can constantly keep his eye on the boat during the lowering thereof.

A construction in accordance with the invention has the further advantage that the top weight of the ship is reduced and that the promenade deck immediately below the boat deck. is efficiently insulated by the ventilation ducts against the heat of the sun.

An embodiment of the invention will now be described with reference to the drawings, on which:

Fig. l is a diagrammatic cross-section of part of the ship, and

Fig. 2 shows some further details, also in crosssection.

is the ships side and 2 is the promenade deck. The boat deck comprises a downwardly and outwardly sloping section 3 and a horizontal section 5, interconnected by a vertical section 5. Section 5 has a slope of say 30-40", and its length, measured athwartships, is approximately equal to half the width of a life boat. The extra height thus obtained above the promenade deck 2 is utilized for the accommodation of air ducts 6 for a central ventilation system. The bottoms of said ducts are designated by 8.

9 is a. spacious saloon, I0 is a space for the staff, and H the promenade deck for said staff.

According to Fig. 2, the davits l2 for the boat I are mounted on the sloping deck section 3 within the horizontal projection of the boat, both longitudinally and athwartships. The boat projects from the ships side through about half its width. The boat may be of the ordinary type. It is provided with two suitably spaced skate-like members It, the straight lower portions ll of which rest directly upon the sloping deck section 3. Thus the boat can slide down said section towards the water by gravity, without it being necessary for the davit IE to be swung out. This has the advantage that during the lowering of the boat its tackles are outwardly inclined, whereby the boat is constantly forced by gravity against the ships side, so that, when the ship is rolling, there is little danger of the boat being smashed against its side.

The drums I3 and M of each of the two Winches of the double winch are mounted the one vertically above the other, and the two winches are placed side by side in a common frame I5. In this manner, the Winches serving for the handling of two adjacent and aligned boats can be placed as a unitary structure in proximity of, and between the stern post and the stem, respectively, of said boats, so as to occupy a minimum of space.

The outboard portion of the frame of the double winch is mounted on the sloping section 3 of the boat deck, so that the double winch does not occupy any part of the promenade section proper. Moreover, the man-at-"the-winch can constantly keep his eye on the descending boat.

What I claim is:

1. A ship structure to accommodate a lifeboat comprising a hull having a substantially vertical outer side wall, a promenade deck positioned adjacent and overhanging the vertical outer side Wall of the hull, a boat deck above the promenade deck comprising a horizontal deck portion, a substantially vertical wall disposed inwardly of the outer side wall of the hull, and an outwardly and downwardly extending portion sloping from said vertical wall towards and at least as far as the outer side wall of the hull, said latter portion forming a boat receiving recess, and a davit associated with said outwardly and downwardly extending portion constructed and arranged to swing the boat out from said recess and over said extending portion for lowering said boat.

2. A ship structure as claimed in claim 1 in which the boat deck overhangs the vertical outer side wall of the hull,

3. A ship structure to accommodate a lifeboat, comp-rising a hull of standard shape having a substantially vertical outer side wall, a promenade deck positioned adjacent and overhanging the vertical outer side wall of the hull, a boat deck above the promenade deck comprising a horizontal deck portion, a substantially vertical wall extending downwardly from the horizontal deck portion and arranged inboard of the outer side Wall of the hull, a horizontal portion extending outwardly from the bottom edge of said wall, an outwardly and downwardly sloping portion extending from the outer edge of the horizontal portion towards and at least as far as the outer side wall of the hull thereby forming a boat receiving recess, and a davit associated with said outwardly and downwardly extending portion constructed and arranged to swing the boat out from said recess and over said extending portion for lowering said boat.

4. A ship structure to accommodate a lifeboat comprising a hull of standard shape having a substantially vertical outer side wall, a promenade deck positioned adjacent and overhanging the vertical outer side wall of the hull, a boat deck above the promenade deck comprising a horizontal deck portion, a substantially vertical wall extending downwardly from the horizontal deck portion and disposed inwardly of the outer side wall of the hull, a spaced horizontal wall disposed below said horizontal deck portion so as to brace the latter and forming a chambered portion adapted for ship ventilation purposes, a

horizontal section extending outwardly from the bottom edge of said vertical wall and forming a. continuation of said spaced horizontal wall, an outwardly and downwardly sloping section of said boat deck extending from said latter horizontal section towards and at least as far as the 

